Type-writing machine.



Y No. 664,347.

Patented Dec. 18, I900. L.'S. BUBRIDGE.

TYPE WRITING MACHINE.

(Application filed June 5, 1900.)

4 Sheets--Shaat (No Model.)

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(Application filed June 5, 1900.)

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WITNESSES:

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UNITED STATES PATENT GFFICE.

LEF S. BURRIDGE, OF NEW YORK, N. Y.

TYPE-WRITING MACHINE.

SPECIFICATION forming part of Letters Patent No. 664,347, dated December 18, 1900.

Original application filed April 18, 1900, Serial No. 13,313. Divided and this application filed June 5, 1900. Serial No.

- 19,112. (No model.)

To whom it may concern/.-

Be it known that I, LEE S. BURRIDGE, a citizen of the United States, residing in the borough of Manhattan, in the city and State of New York, have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My invention relates, as to its main ele ments, to the carriage mechanism of typewriting machines.

The nature of the invention will fully ap pear from the following specification and appended claims.

In the accompanying drawings, Figure 1 is a vertical sectional view of my machine, the plane of section being from front to rear of the machine. Fig. 2 is a rear elevation, part of the main frame being broken away to show the interior more clearly. Fig. 3 is a detail View, partly in section, of a part of the car'- riage-supportin g frame to illustrate the shiftgular shape and has at 4 an approximately vertical standard, which supports the type levers 5 and paper-carriage 6. A series of pull-rods 8 connect the upper ends of the vertical arms of bell-crank key-levers 3 to the lower shorter arms of the series of type-levers 5, which are pivoted to a curved pivot-rod 9, substantially concentricwith the printingpoint. Said pivot-rod 'is carried by a lower guide-comb 10, in which the lower short arms of the type-levers travel, while the long arms of the type-levers are guided by an upper guide-comb 11. Both guide-combs are rigidly supported upon the standard 4, and their guideslots are arranged in planes radial to the printing-point.

Attached to each type-lever is a counterbalancing-spring 12, arranged substantially as shown in my copending application, filed August 1, 1899, serially numbered 725,776. When at rest, the front or outer ends of the type-1e: vers are supported by bar 15, preferably covered with some cushioning material, such as felt.

The paper-carriage 6 has a long feed-rack 18, which is engaged by pinion 19, made of sufficient length vertically to allow the shifting motion of the carriage, hereinafter described. Said pinion is carried by a vertical shaft 20, mounted in lug 21 of standard eand bearing at its lower end a star-wheel 22.

By using the term star-wheel here I intend merely to indicate the form of mechanism here shown, and it is to be understood that any equivalent form of wheel adapted to give a step-by-step motion may be used and is intended to be covered by that term.

Pivoted toa rigid arm 23 of lug 21, so as to vibrate in the vertical plane of the printingpoint of the machine, is a universal bar 24. The bar has a laterally-extended head 25, which is engaged by any type-lever operated so as to vibrate the universal bar. It is nor-- mally held in the position shown in Fig. l by a spring 26, attached to its lower short arm 27, and when struck by a type-lever is vibrated toward the paper-carriage. The pull of the spring 26 is normally resisted by a rod" 28., engaging a slot in the arm 27 and connected to the substantially vertical arm of bellcrank spacing-lever 29. The upward motion of the key end of spacing-lever 29 is arrested by a pin or bolt 30. The result of this train of mechanism is the holding of the universal bar normally in the position shown in Fig. l. A tongue or arm 31 on the universal bar 24 guides it by engagement with a slot 32 in a 0 guide-bracket The upper end or head of the universal bar lies adjacent to the flaring slot 34 in a guide 35, which directs all of the type-levers to the printing-point and which as they enter said slot are necessarily brought.

ICO

' head of the universal bar, as shown.

chine, the outermost type-levers being most nearly horizontal. The type-lever is accord inglyeither straight or bent atapoint adjacent to the head 25 of the universal bar, the angle of the bend depending on the distance of the type-lever from the center of the machine. The true center of the type-leversthat is to say, the point toward which their inner ends all approach when thrown to the striking position and to which all of their guide-slots are radialis a point just below the centralversal bar is forced to the rear-that is to say,

toward the printing-point-either on being struck by a type-lever or by the depression of the spacing-key, the spring portion 36 'falls below the teeth of the star-wheel and springs to the left, where it is arrested by the stop .37 as the rigid part or heel of the universal bar comes in contact with the tooth of the star-wheel justleft by said spring portion. When now the universal bar is again vibrated forward by the pull of the spring 26, the starwheel, being rotated by the pull of the car-' 'riage-spring in well-known manner, will have itsnext succeeding tooth engaged by the spring portion 36 and will force said spring portion to the right until it is arrested by ,contact with the rigid part of the universal bar. A step-by-step motion of the paper-carriage is thus obtained by vibrating the universal bar.

It will be seen that the slotted connection of the rod 28 with the short arm 27 of the universal bar will permit the vibration of the universal bar when it is struck by the typelevers without moving the space-key. The

.bolt 30,'which arrests the upward motion of the space-key lever 29, is normally held in position (shown in Fig. 1) by the spring 38. Fig. 5 shows the bolt from the rear. It will be seen that by pressing it toward the left of the machine (toward the right of Fig. 5) the bolt will be disengaged from the space-lever, allowing the latter to rise under the pull of springs 26 and 71, and thus allowing said spring 26 to pull the short arm 27 of the universal bar beyond its normal position, lifting the spring portion of the universal bar above the star-Wheel 22 and leaving the carriage entirely free to be forced by hand in either direction. I

The inking mechanism consists of a pad 39,

' of felt or similar porous material, more fully described in my original application, Serial No. 13,313, hereinafter referred to.

The platen 4:7 is mounted so as to rotate upon the paper-carriage 6 and has the usual thumb-piece 48 for rotating it to feed in or eject the paper or to give line-spacing thereto. The platen is held from accidental rotation by toothed wheel engaged by dog 50. 51 is the paper-guide plate.

The paper-carriage has at'rear a long guiderod 54, engaging a long sleeve 55, carried by the upper end of asupporting shifting frame 56. The guide-rod 54 is connected to the car riage by a plate or web 57, and the guidesleeve55 is open at top to allow the said web or plate to enter said opening, and thus allow free play of the rod in the sleeve. I am thus enabled to give fulllateral motion to the papercarriage without extending its support unduly, asiscustomaryon such machines. The play of the carriage in one direction is limited by the engagement of a pin 58 thereon with an adjustable stop 59 on the shifting frame 56. Said shifting frame is of the shape shown in Figs.- 2 and 3. It carries, besides the paper-carriage, an arm 60, having an antifriction-roller 61 for supporting the paper-carriage when in position of projection at the left of the machine, the spring-drum 62, connected to said carriage by chain or ligament 63, the bell 64, its hammer 65, actuated by adjustable trip 66 on the papercarriage, and the inking mechanism already mentioned. The papercarriage is guided and its rack 18 held in proper position against the pinion 19 by the antifriction-roller 76, carried by arm 77. of the shifting frame 56. Its weight is counterbalanced by springs 67, and it is shifted in a manner which will be readily, understood by those skilled in the art by ashift-lever. The shifting of the frame 56 enables the platen to be placed in any one of th ree positions, sov as to bring any one of three series of types on the type-levers to operative relation thereto. At its lower end the supporting or shifting frame 56 is guided by connection to arms 69, attached to a shaft 70, to which the shiftingdever is also connected and which serves as a point of attachment for the return-spring 71 of space-lever 29, while at its upper end the said frame is guided by the projecting ends of a rod 72, which engage vertical slots 73 in the top of standard 4.

It will be understood that the above-described preferred form of my machine is capable of considerable variations without departing from my invention. For example, the position of the long guide rod and sleeve for the paper-carriage may be reversed, either member being carried by the shifting frame and the other by the paper-carriage.

Certain features of this machine herein shown and partially described, referring to the type-bar action, are claimed in the original application, of which the present case is a division, No. 13,313, filed- April 18, 1900.

Having thus described my invention, what I claim as new therein, and desire to secure by Letters Patent, is-

1. Ina type-Writing machine, the combination of a stationary machine-frame, an elongated step bystep feed pinion thereon, a platen-carriage having an elongated feed rack engaging said pinion and a shifting frame carrying said platen-carriage, the platen-carriage having longitudinal motion on said shifting frame, and the shifting frame, platen-carriage and rack-bar having a transverse shifting motion with reference to said pinion, substantially as set forth.

2. In a type-writing machine, the combination of a paper-carriage, its feed-rack, a feeding-pinion therefor; a star-Wheel operatively connected with said feeding-pinion, a driving device for the carriage, and a universal bardirectly engaging said star-wheel and arranged to be operated, substantially as set forth.

3. In a type-writing machine, the combina-. tion of a paper-carriage, feeding mechanism therefor, comprising a star-wheel, and a universal bar having a rigid part and a spring part alternately engaging the said star-wheel, substantially as set forth. I

4. In a type-writing machine, the combination of a paper-carriage, feeding mechanism therefor comprising a star-Wheel, a universal bar normally directly engaging said star- Wheel, a spring connected thereto tending to disconnect the universal bar and star-wheel, mechanism which normally prevents the complete disengagement of the universal bar and star-Wheel, and releasing devices for said mechanism, substantially as set forth.

5. In a type-writing machine, the combination of a paper-carriage, feeding mechanism therefor, a vibrating mechanism adapted to alternately stop and release the said feeding mechanism, a spring connected to said'vibrating mechanism and tending to disengage the same from the feeding mechanism, a spacingkey for holding said vibrating mechanism in normal relation with the feeding mechanism, and an unlocking device for releasing said spacing-key, substantially as set forth.

6. In a type-Writing machine, the combination of a stationary machine-frame, an elongated step-by-step feed-pinion thereon, a platen-carriage having an elongated feed-rack engaging said pinion and a shifting frame carrying said platen-carriage, and connected thereto by an elongated slotted sleeve and guide-rod and having an antifriction-roller for guiding said feed-rack against its pinion, substantially as set forth.

7 In a type-writing machine, the combina tion of a paper-carriage, a star-wheel controlling the feeding motion thereof and a universal bar directly engaging said star-Wheel and adapted to be operated on the depression of a key-lever, substantially as set forth.

8. In a type-Writing machine, the combination of a paper-carriage, feeding mechanism therefor, comprising a star-wheel, a spacingkey lever, a vibrating bar engaging said star wheel and connected to said spacing-lever, and a series of type-levers arranged to strike said vibrating bar, substantially as set forth.

9. In a type-writing machine, the combination of a paper-carriage, feeding mechanism therefor, comprising a star-wheel, a series of type-levers arranged to strike at a common printing-point, a platen, a vibrating universal bar arranged in the paths of said type-levers and having operative connection with said feeding mechanism, a spring connected to said universal bar for holding it in normal position, and a spacing-key having lost-motion connection with said universal bar, substantially as set forth.

10. In a type-writing machine, the combination of a series of type-levers arranged to strike radially at a common point, a universal bar arranged adjacent to such common point and in the paths of all of said type-levers, and carriage-feeding mechanism comprising a step-by-step feed-rack and a starwheel directly engaged by said universal bar, substantially as set forth.

11. In a type-writing machine, the combination of a series of type-levers arranged to strike radially at a common point, and a universal bar having operative connection with j the carriage-feeding mechanism having a part lying adjacent to said common point in the paths of said type-levers and fulcrumed at a point remote therefrom, the said carriage-feeding mechanism comprising a stepby-step feed-rack and a star-wheel directly engaged by said universal bar.

12. In a type-Writing machine, the combination of a universal bar having operative connection with the carriage-feeding mechanism, and a series of type-levers arranged to strike at substantially the same point on said universal bar.

13. In a type-Writing machine, the combination of a series of type levers or bars arranged to strike at a common printing-point, and a universal bar having operative connection with the carriage-feeding mechanism and having a portion adapted to be struck by all of said type bars or levers and arranged at the true center of the circle which includes the type-lever pivots.

14. In a type-writing machine, the combination of a platen, a type-guide arranged in proximity thereto, a series of type bars or levers arranged to enter said guide, and a universal bar common to said type bars or levers supported adjacent to said guide and having operative connection with the carriage-feeding mechanism.

15. In a type-writing machine, the combination of a paper-carriage, the platen, a series of type-levers arranged to strike at a common printing-point upon the platen and a vibrating universal bar having a head lying in the paths of all of said type-levers and hav- Sid Of the bldteh, and a universal bar h'av 1 mg diferativ'e cohn'ction with the carriagefediiig iiihafiism pivoted to "vibrate in a Vef'tic'al plmean'd having a head lying iii the) ptths bf Said ty'pe-levers, Substantially as st forth 17; In a, type-Writing 'm'achih, the Gotr'gbi? 'nati'o'n of a platen, a fini've'isal baiohnt'ed to the (Barrage-feeding m'Ghafii'SIil aid h a'v inga. striking portion lyiiig adjteht t0 the operative connection with Said stai=whebl-a,hd

ly'i'lig ijfi the paths of 3110f said ty-p'e-1ev'et's,'sub'- stahtially as Set forth.

' LEE S. BURRI W itne'ss v W. P. HAMMOND, J. GREEN. 

